Battery case



FIG. 1 is a perspective view of a battery case, showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a perspective view thereof, shown in an open state.

The broken lines shown illustrate portions of the battery case that form no part of the claimed design. 

CLAIM The ornamental design for a battery case, as shown and described. 